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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: JSimpleDB.html 842 2015-03-07 18:20:42Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import com.google.common.collect.Iterables;<a name="line.10"></a>
<span class="sourceLineNo">011</span><a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.lang.annotation.Annotation;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.lang.reflect.AnnotatedElement;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import java.util.ArrayList;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import java.util.Arrays;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import java.util.Collections;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import java.util.HashMap;<a name="line.17"></a>
<span class="sourceLineNo">018</span>import java.util.HashSet;<a name="line.18"></a>
<span class="sourceLineNo">019</span>import java.util.List;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.util.Map;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.util.SortedMap;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.util.TreeMap;<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.jsimpledb.annotation.JSimpleClass;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.jsimpledb.core.Database;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.jsimpledb.core.ObjId;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.jsimpledb.core.Transaction;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.jsimpledb.core.TypeNotInSchemaVersionException;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.jsimpledb.core.UnknownFieldException;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.jsimpledb.core.UnknownTypeException;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.jsimpledb.kv.KeyRange;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.jsimpledb.kv.KeyRanges;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.jsimpledb.kv.simple.SimpleKVDatabase;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.jsimpledb.schema.NameIndex;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.jsimpledb.schema.SchemaModel;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.jsimpledb.schema.SchemaObjectType;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.slf4j.Logger;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.slf4j.LoggerFactory;<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span>/**<a name="line.40"></a>
<span class="sourceLineNo">041</span> * A JSimpleDB database.<a name="line.41"></a>
<span class="sourceLineNo">042</span> *<a name="line.42"></a>
<span class="sourceLineNo">043</span> * &lt;p&gt;<a name="line.43"></a>
<span class="sourceLineNo">044</span> * JSimpleDB consists of two main layers. The lower level "core" API provides a rigourous database abstraction on top of<a name="line.44"></a>
<span class="sourceLineNo">045</span> * a key/value store. It supports simple fields of any atomic Java type, as well as list, set, and map complex fields,<a name="line.45"></a>
<span class="sourceLineNo">046</span> * tightly controlled schema versioning, simple and composite indexes, and lifecycle and change notifications.<a name="line.46"></a>
<span class="sourceLineNo">047</span> * The core API is provided via the {@link Database} class.<a name="line.47"></a>
<span class="sourceLineNo">048</span> * &lt;/p&gt;<a name="line.48"></a>
<span class="sourceLineNo">049</span> *<a name="line.49"></a>
<span class="sourceLineNo">050</span> * &lt;p&gt;<a name="line.50"></a>
<span class="sourceLineNo">051</span> * This {@link JSimpleDB} class represents the upper layer. It sits on top of the core {@link Database} class and provides<a name="line.51"></a>
<span class="sourceLineNo">052</span> * a fully type-safe Java view of a {@link Database}, where all access is through user-supplied Java model classes.<a name="line.52"></a>
<span class="sourceLineNo">053</span> * In addition, a {@link JSimpleDB} provides automatic incremental JSR 303 validation. Database types and fields,<a name="line.53"></a>
<span class="sourceLineNo">054</span> * as well as listener methods, are all declared using various {@linkplain org.jsimpledb.annotation Java annotations}.<a name="line.54"></a>
<span class="sourceLineNo">055</span> * &lt;/p&gt;<a name="line.55"></a>
<span class="sourceLineNo">056</span> *<a name="line.56"></a>
<span class="sourceLineNo">057</span> * &lt;p&gt;<a name="line.57"></a>
<span class="sourceLineNo">058</span> * User-provided Java model classes are typically abstract and declare fields as abstract Java bean methods. In any case,<a name="line.58"></a>
<span class="sourceLineNo">059</span> * {@link JSimpleDB} generates concrete subclasses at runtime; these runtime classes will implement the {@link JObject} interface.<a name="line.59"></a>
<span class="sourceLineNo">060</span> * The corresponding Java model objects are stateless; all database field state is derived from whichever transaction is<a name="line.60"></a>
<span class="sourceLineNo">061</span> * {@linkplain JTransaction#getCurrent associated with the current thread}.<a name="line.61"></a>
<span class="sourceLineNo">062</span> * &lt;/p&gt;<a name="line.62"></a>
<span class="sourceLineNo">063</span> *<a name="line.63"></a>
<span class="sourceLineNo">064</span> * &lt;p&gt;<a name="line.64"></a>
<span class="sourceLineNo">065</span> * Not counting "snapshot" objects (see below), this class guarantees that for each {@link ObjId} there will only ever be<a name="line.65"></a>
<span class="sourceLineNo">066</span> * a single, globally unique, {@link JObject} Java model object. Therefore, the same Java model objects can be used in and<a name="line.66"></a>
<span class="sourceLineNo">067</span> * out of any transaction.<a name="line.67"></a>
<span class="sourceLineNo">068</span> * &lt;/p&gt;<a name="line.68"></a>
<span class="sourceLineNo">069</span> *<a name="line.69"></a>
<span class="sourceLineNo">070</span> * &lt;p&gt;<a name="line.70"></a>
<span class="sourceLineNo">071</span> * "Snapshot" objects are in-memory copies of regular database objects that may be imported/exported to/from transactions.<a name="line.71"></a>
<span class="sourceLineNo">072</span> * Snapshot {@link JObject}s are distinct from regular database {@link JObject}s; their state is contained in an in-memory<a name="line.72"></a>
<span class="sourceLineNo">073</span> * {@link SnapshotJTransaction}. See {@link JObject#copyOut JObject.copyOut} and {@link JObject#copyIn JObject.copyIn}.<a name="line.73"></a>
<span class="sourceLineNo">074</span> * &lt;/p&gt;<a name="line.74"></a>
<span class="sourceLineNo">075</span> *<a name="line.75"></a>
<span class="sourceLineNo">076</span> * @see JObject<a name="line.76"></a>
<span class="sourceLineNo">077</span> * @see JTransaction<a name="line.77"></a>
<span class="sourceLineNo">078</span> * @see JSimpleDBFactory<a name="line.78"></a>
<span class="sourceLineNo">079</span> * @see org.jsimpledb.annotation<a name="line.79"></a>
<span class="sourceLineNo">080</span> */<a name="line.80"></a>
<span class="sourceLineNo">081</span>public class JSimpleDB {<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span>    final Logger log = LoggerFactory.getLogger(this.getClass());<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span>    final TreeMap&lt;Integer, JClass&lt;?&gt;&gt; jclasses = new TreeMap&lt;&gt;();<a name="line.85"></a>
<span class="sourceLineNo">086</span>    final HashMap&lt;Class&lt;?&gt;, JClass&lt;?&gt;&gt; jclassesByType = new HashMap&lt;&gt;();<a name="line.86"></a>
<span class="sourceLineNo">087</span>    final TreeMap&lt;Integer, JFieldInfo&gt; jfieldInfos = new TreeMap&lt;&gt;();<a name="line.87"></a>
<span class="sourceLineNo">088</span>    final TreeMap&lt;Integer, JCompositeIndexInfo&gt; jcompositeIndexInfos = new TreeMap&lt;&gt;();<a name="line.88"></a>
<span class="sourceLineNo">089</span>    final ReferencePathCache referencePathCache = new ReferencePathCache(this);<a name="line.89"></a>
<span class="sourceLineNo">090</span>    final ClassGenerator&lt;UntypedJObject&gt; untypedClassGenerator;<a name="line.90"></a>
<span class="sourceLineNo">091</span>    final ArrayList&lt;ClassGenerator&lt;?&gt;&gt; classGenerators;<a name="line.91"></a>
<span class="sourceLineNo">092</span>    final ClassLoader loader = new Loader();<a name="line.92"></a>
<span class="sourceLineNo">093</span>    final Database db;<a name="line.93"></a>
<span class="sourceLineNo">094</span>    final int configuredVersion;<a name="line.94"></a>
<span class="sourceLineNo">095</span>    final StorageIdGenerator storageIdGenerator;<a name="line.95"></a>
<span class="sourceLineNo">096</span>    final JObjectCache jobjectCache = new JObjectCache(this) {<a name="line.96"></a>
<span class="sourceLineNo">097</span>        @Override<a name="line.97"></a>
<span class="sourceLineNo">098</span>        protected JObject instantiate(ClassGenerator&lt;?&gt; classGenerator, ObjId id) throws Exception {<a name="line.98"></a>
<span class="sourceLineNo">099</span>            return (JObject)classGenerator.getConstructor().newInstance(id);<a name="line.99"></a>
<span class="sourceLineNo">100</span>        }<a name="line.100"></a>
<span class="sourceLineNo">101</span>    };<a name="line.101"></a>
<span class="sourceLineNo">102</span>    final boolean hasOnCreateMethods;<a name="line.102"></a>
<span class="sourceLineNo">103</span>    final boolean hasOnDeleteMethods;<a name="line.103"></a>
<span class="sourceLineNo">104</span>    final boolean hasOnVersionChangeMethods;<a name="line.104"></a>
<span class="sourceLineNo">105</span>    final boolean anyJClassRequiresValidation;<a name="line.105"></a>
<span class="sourceLineNo">106</span><a name="line.106"></a>
<span class="sourceLineNo">107</span>    volatile int actualVersion;<a name="line.107"></a>
<span class="sourceLineNo">108</span><a name="line.108"></a>
<span class="sourceLineNo">109</span>    private SchemaModel schemaModel;<a name="line.109"></a>
<span class="sourceLineNo">110</span>    private NameIndex nameIndex;<a name="line.110"></a>
<span class="sourceLineNo">111</span><a name="line.111"></a>
<span class="sourceLineNo">112</span>    /**<a name="line.112"></a>
<span class="sourceLineNo">113</span>     * Create an instance using an initially empty, in-memory {@link SimpleKVDatabase}.<a name="line.113"></a>
<span class="sourceLineNo">114</span>     * Generates a database schema by introspecting the {@code classes}; schema version number {@code 1} is assumed<a name="line.114"></a>
<span class="sourceLineNo">115</span>     * and a {@link DefaultStorageIdGenerator} is used to auto-generate storage ID's where necessary.<a name="line.115"></a>
<span class="sourceLineNo">116</span>     *<a name="line.116"></a>
<span class="sourceLineNo">117</span>     * &lt;p&gt;<a name="line.117"></a>
<span class="sourceLineNo">118</span>     * This constructor can also be used just to validate the annotations on the given classes.<a name="line.118"></a>
<span class="sourceLineNo">119</span>     * &lt;/p&gt;<a name="line.119"></a>
<span class="sourceLineNo">120</span>     *<a name="line.120"></a>
<span class="sourceLineNo">121</span>     * @param classes classes annotated with {@link JSimpleClass &amp;#64;JSimpleClass} annotations<a name="line.121"></a>
<span class="sourceLineNo">122</span>     * @throws IllegalArgumentException if {@code classes} is null<a name="line.122"></a>
<span class="sourceLineNo">123</span>     * @throws IllegalArgumentException if {@code classes} contains a null class or a class with invalid annotation(s)<a name="line.123"></a>
<span class="sourceLineNo">124</span>     * @throws org.jsimpledb.core.InvalidSchemaException if the schema implied by {@code classes} is invalid<a name="line.124"></a>
<span class="sourceLineNo">125</span>     */<a name="line.125"></a>
<span class="sourceLineNo">126</span>    public JSimpleDB(Iterable&lt;? extends Class&lt;?&gt;&gt; classes) {<a name="line.126"></a>
<span class="sourceLineNo">127</span>        this(new Database(new SimpleKVDatabase()), 1, new DefaultStorageIdGenerator(), classes);<a name="line.127"></a>
<span class="sourceLineNo">128</span>    }<a name="line.128"></a>
<span class="sourceLineNo">129</span><a name="line.129"></a>
<span class="sourceLineNo">130</span>    /**<a name="line.130"></a>
<span class="sourceLineNo">131</span>     * Create an instance using an initially empty, in-memory {@link SimpleKVDatabase}.<a name="line.131"></a>
<span class="sourceLineNo">132</span>     *<a name="line.132"></a>
<span class="sourceLineNo">133</span>     * &lt;p&gt;<a name="line.133"></a>
<span class="sourceLineNo">134</span>     * Equivalent to {@link #JSimpleDB(Iterable) JSimpleDB}{@code (Arrays.asList(classes))}.<a name="line.134"></a>
<span class="sourceLineNo">135</span>     * &lt;/p&gt;<a name="line.135"></a>
<span class="sourceLineNo">136</span>     *<a name="line.136"></a>
<span class="sourceLineNo">137</span>     * @param classes classes annotated with {@link JSimpleClass &amp;#64;JSimpleClass} annotations<a name="line.137"></a>
<span class="sourceLineNo">138</span>     * @see #JSimpleDB(Iterable)<a name="line.138"></a>
<span class="sourceLineNo">139</span>     */<a name="line.139"></a>
<span class="sourceLineNo">140</span>    public JSimpleDB(Class&lt;?&gt;... classes) {<a name="line.140"></a>
<span class="sourceLineNo">141</span>        this(Arrays.asList(classes));<a name="line.141"></a>
<span class="sourceLineNo">142</span>    }<a name="line.142"></a>
<span class="sourceLineNo">143</span><a name="line.143"></a>
<span class="sourceLineNo">144</span>    /**<a name="line.144"></a>
<span class="sourceLineNo">145</span>     * Primary constructor.<a name="line.145"></a>
<span class="sourceLineNo">146</span>     *<a name="line.146"></a>
<span class="sourceLineNo">147</span>     * @param database core database to use<a name="line.147"></a>
<span class="sourceLineNo">148</span>     * @param version schema version number of the schema derived from {@code classes},<a name="line.148"></a>
<span class="sourceLineNo">149</span>     *  or zero to use the highest version already recorded in the database<a name="line.149"></a>
<span class="sourceLineNo">150</span>     * @param storageIdGenerator generator for auto-generated storage ID's, or null to disallow auto-generation of storage ID's<a name="line.150"></a>
<span class="sourceLineNo">151</span>     * @param classes classes annotated with {@link JSimpleClass &amp;#64;JSimpleClass} annotations; non-annotated classes are ignored<a name="line.151"></a>
<span class="sourceLineNo">152</span>     * @throws IllegalArgumentException if {@code database} or {@code classes} is null<a name="line.152"></a>
<span class="sourceLineNo">153</span>     * @throws IllegalArgumentException if {@code version} is not greater than zero<a name="line.153"></a>
<span class="sourceLineNo">154</span>     * @throws IllegalArgumentException if {@code classes} contains a null class or a class with invalid annotation(s)<a name="line.154"></a>
<span class="sourceLineNo">155</span>     * @throws InvalidSchemaException if the schema implied by {@code classes} is invalid<a name="line.155"></a>
<span class="sourceLineNo">156</span>     */<a name="line.156"></a>
<span class="sourceLineNo">157</span>    JSimpleDB(Database database, int version, StorageIdGenerator storageIdGenerator, Iterable&lt;? extends Class&lt;?&gt;&gt; classes) {<a name="line.157"></a>
<span class="sourceLineNo">158</span><a name="line.158"></a>
<span class="sourceLineNo">159</span>        // Initialize<a name="line.159"></a>
<span class="sourceLineNo">160</span>        if (database == null)<a name="line.160"></a>
<span class="sourceLineNo">161</span>            throw new IllegalArgumentException("null database");<a name="line.161"></a>
<span class="sourceLineNo">162</span>        if (version &lt; 0)<a name="line.162"></a>
<span class="sourceLineNo">163</span>            throw new IllegalArgumentException("invalid schema version: " + version);<a name="line.163"></a>
<span class="sourceLineNo">164</span>        if (classes == null)<a name="line.164"></a>
<span class="sourceLineNo">165</span>            throw new IllegalArgumentException("null classes");<a name="line.165"></a>
<span class="sourceLineNo">166</span>        this.db = database;<a name="line.166"></a>
<span class="sourceLineNo">167</span>        this.configuredVersion = version;<a name="line.167"></a>
<span class="sourceLineNo">168</span>        this.storageIdGenerator = storageIdGenerator;<a name="line.168"></a>
<span class="sourceLineNo">169</span><a name="line.169"></a>
<span class="sourceLineNo">170</span>        // Inventory classes; automatically add all @JSimpleClass-annotated superclasses of @JSimpleClass-annotated classes<a name="line.170"></a>
<span class="sourceLineNo">171</span>        final HashSet&lt;Class&lt;?&gt;&gt; jsimpleClasses = new HashSet&lt;&gt;();<a name="line.171"></a>
<span class="sourceLineNo">172</span>        for (Class&lt;?&gt; type : classes) {<a name="line.172"></a>
<span class="sourceLineNo">173</span><a name="line.173"></a>
<span class="sourceLineNo">174</span>            // Sanity check<a name="line.174"></a>
<span class="sourceLineNo">175</span>            if (type == null)<a name="line.175"></a>
<span class="sourceLineNo">176</span>                throw new IllegalArgumentException("null class found in classes");<a name="line.176"></a>
<span class="sourceLineNo">177</span><a name="line.177"></a>
<span class="sourceLineNo">178</span>            // Add type and all @JSimpleClass-annotated superclasses<a name="line.178"></a>
<span class="sourceLineNo">179</span>            do {<a name="line.179"></a>
<span class="sourceLineNo">180</span><a name="line.180"></a>
<span class="sourceLineNo">181</span>                // Find annotation<a name="line.181"></a>
<span class="sourceLineNo">182</span>                final JSimpleClass annotation = type.getAnnotation(JSimpleClass.class);<a name="line.182"></a>
<span class="sourceLineNo">183</span>                if (annotation == null)<a name="line.183"></a>
<span class="sourceLineNo">184</span>                    continue;<a name="line.184"></a>
<span class="sourceLineNo">185</span><a name="line.185"></a>
<span class="sourceLineNo">186</span>                // Sanity check type<a name="line.186"></a>
<span class="sourceLineNo">187</span>                if (type.isPrimitive() || type.isInterface() || type.isArray()) {<a name="line.187"></a>
<span class="sourceLineNo">188</span>                    throw new IllegalArgumentException("illegal type " + type + " for @"<a name="line.188"></a>
<span class="sourceLineNo">189</span>                      + JSimpleClass.class.getSimpleName() + " annotation: not a normal class");<a name="line.189"></a>
<span class="sourceLineNo">190</span>                }<a name="line.190"></a>
<span class="sourceLineNo">191</span><a name="line.191"></a>
<span class="sourceLineNo">192</span>                // Add class<a name="line.192"></a>
<span class="sourceLineNo">193</span>                jsimpleClasses.add(type);<a name="line.193"></a>
<span class="sourceLineNo">194</span>            } while ((type = type.getSuperclass()) != null);<a name="line.194"></a>
<span class="sourceLineNo">195</span>        }<a name="line.195"></a>
<span class="sourceLineNo">196</span><a name="line.196"></a>
<span class="sourceLineNo">197</span>        // Add Java model classes<a name="line.197"></a>
<span class="sourceLineNo">198</span>        for (Class&lt;?&gt; type : jsimpleClasses) {<a name="line.198"></a>
<span class="sourceLineNo">199</span><a name="line.199"></a>
<span class="sourceLineNo">200</span>            // Create JClass<a name="line.200"></a>
<span class="sourceLineNo">201</span>            final JSimpleClass annotation = type.getAnnotation(JSimpleClass.class);<a name="line.201"></a>
<span class="sourceLineNo">202</span>            final String name = annotation.name().length() != 0 ? annotation.name() : type.getSimpleName();<a name="line.202"></a>
<span class="sourceLineNo">203</span>            if (this.log.isTraceEnabled()) {<a name="line.203"></a>
<span class="sourceLineNo">204</span>                this.log.trace("found @" + JSimpleClass.class.getSimpleName() + " annotation on " + type<a name="line.204"></a>
<span class="sourceLineNo">205</span>                  + " defining object type `" + name + "'");<a name="line.205"></a>
<span class="sourceLineNo">206</span>            }<a name="line.206"></a>
<span class="sourceLineNo">207</span><a name="line.207"></a>
<span class="sourceLineNo">208</span>            // Get storage ID<a name="line.208"></a>
<span class="sourceLineNo">209</span>            int storageId = annotation.storageId();<a name="line.209"></a>
<span class="sourceLineNo">210</span>            if (storageId == 0)<a name="line.210"></a>
<span class="sourceLineNo">211</span>                storageId = this.getStorageIdGenerator(annotation, type).generateClassStorageId(type, name);<a name="line.211"></a>
<span class="sourceLineNo">212</span><a name="line.212"></a>
<span class="sourceLineNo">213</span>            // Create JClass<a name="line.213"></a>
<span class="sourceLineNo">214</span>            JClass&lt;?&gt; jclass;<a name="line.214"></a>
<span class="sourceLineNo">215</span>            try {<a name="line.215"></a>
<span class="sourceLineNo">216</span>                jclass = this.createJClass(name, storageId, type);<a name="line.216"></a>
<span class="sourceLineNo">217</span>            } catch (IllegalArgumentException e) {<a name="line.217"></a>
<span class="sourceLineNo">218</span>                throw new IllegalArgumentException("invalid @" + JSimpleClass.class.getSimpleName()<a name="line.218"></a>
<span class="sourceLineNo">219</span>                  + " annotation on " + type + ": " + e, e);<a name="line.219"></a>
<span class="sourceLineNo">220</span>            }<a name="line.220"></a>
<span class="sourceLineNo">221</span><a name="line.221"></a>
<span class="sourceLineNo">222</span>            // Add jclass<a name="line.222"></a>
<span class="sourceLineNo">223</span>            this.addJClass(jclass);<a name="line.223"></a>
<span class="sourceLineNo">224</span>            this.log.debug("added Java model class `" + jclass.name + "' with storage ID " + jclass.storageId);<a name="line.224"></a>
<span class="sourceLineNo">225</span>        }<a name="line.225"></a>
<span class="sourceLineNo">226</span><a name="line.226"></a>
<span class="sourceLineNo">227</span>        // Inventory class generators<a name="line.227"></a>
<span class="sourceLineNo">228</span>        this.classGenerators = new ArrayList&lt;&gt;(this.jclasses.size() + 1);<a name="line.228"></a>
<span class="sourceLineNo">229</span>        for (JClass&lt;?&gt; jclass : this.jclasses.values())<a name="line.229"></a>
<span class="sourceLineNo">230</span>            this.classGenerators.add(jclass.classGenerator);<a name="line.230"></a>
<span class="sourceLineNo">231</span>        this.untypedClassGenerator = new ClassGenerator&lt;UntypedJObject&gt;(this, UntypedJObject.class);<a name="line.231"></a>
<span class="sourceLineNo">232</span>        this.classGenerators.add(this.untypedClassGenerator);<a name="line.232"></a>
<span class="sourceLineNo">233</span><a name="line.233"></a>
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<span class="sourceLineNo">235</span>        for (JClass&lt;?&gt; jclass : this.jclasses.values())<a name="line.235"></a>
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<span class="sourceLineNo">240</span>        for (JClass&lt;?&gt; jclass : this.jclasses.values()) {<a name="line.240"></a>
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<span class="sourceLineNo">244</span>                    final JComplexFieldInfo complexFieldInfo = (JComplexFieldInfo)jfield.toJFieldInfo();<a name="line.244"></a>
<span class="sourceLineNo">245</span>                    for (JSimpleField subField : complexField.getSubFields()) {<a name="line.245"></a>
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<span class="sourceLineNo">256</span>        // Witness all simple fields to corresponding simple field info's<a name="line.256"></a>
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<span class="sourceLineNo">276</span>        // Add composite indexes to class; like fields, indexes are inherited (duplicated) from superclasses<a name="line.276"></a>
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<span class="sourceLineNo">290</span>            for (JCompositeIndex index : jclass.jcompositeIndexes.values()) {<a name="line.290"></a>
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<span class="sourceLineNo">292</span>                for (JSimpleField jfield : index.jfields) {<a name="line.292"></a>
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<span class="sourceLineNo">294</span>                    indexInfo.getJFieldInfos().add(jfieldInfo);<a name="line.294"></a>
<span class="sourceLineNo">295</span>                }<a name="line.295"></a>
<span class="sourceLineNo">296</span>                this.addJCompositeIndexInfo(index, indexInfo, indexDescriptionMap);<a name="line.296"></a>
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<span class="sourceLineNo">299</span><a name="line.299"></a>
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<span class="sourceLineNo">301</span>        for (JClass&lt;?&gt; jclass : this.jclasses.values())<a name="line.301"></a>
<span class="sourceLineNo">302</span>            jclass.scanAnnotations();<a name="line.302"></a>
<span class="sourceLineNo">303</span><a name="line.303"></a>
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<span class="sourceLineNo">305</span>        for (JClass&lt;?&gt; jclass : this.jclasses.values())<a name="line.305"></a>
<span class="sourceLineNo">306</span>            jclass.calculateValidationRequirement();<a name="line.306"></a>
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<span class="sourceLineNo">313</span><a name="line.313"></a>
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<span class="sourceLineNo">316</span>        boolean anyOnDeleteMethods = false;<a name="line.316"></a>
<span class="sourceLineNo">317</span>        boolean anyOnVersionChangeMethods = false;<a name="line.317"></a>
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<span class="sourceLineNo">320</span>            anyOnDeleteMethods |= !jclass.onDeleteMethods.isEmpty();<a name="line.320"></a>
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<span class="sourceLineNo">325</span>        this.hasOnVersionChangeMethods = anyOnVersionChangeMethods;<a name="line.325"></a>
<span class="sourceLineNo">326</span><a name="line.326"></a>
<span class="sourceLineNo">327</span>        // Validate schema<a name="line.327"></a>
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<span class="sourceLineNo">329</span><a name="line.329"></a>
<span class="sourceLineNo">330</span>        // Eagerly load all generated Java classes so we "fail fast" if there are any loading errors<a name="line.330"></a>
<span class="sourceLineNo">331</span>        this.untypedClassGenerator.generateClass();<a name="line.331"></a>
<span class="sourceLineNo">332</span>        this.untypedClassGenerator.generateSnapshotClass();<a name="line.332"></a>
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<span class="sourceLineNo">335</span>            classGenerator.generateClass();<a name="line.335"></a>
<span class="sourceLineNo">336</span>            classGenerator.generateSnapshotClass();<a name="line.336"></a>
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<span class="sourceLineNo">348</span>              + " annotation on " + target + ": no storage ID is given, but storage ID auto-generation is disabled"<a name="line.348"></a>
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<span class="sourceLineNo">362</span><a name="line.362"></a>
<span class="sourceLineNo">363</span>    /**<a name="line.363"></a>
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<span class="sourceLineNo">366</span>     * be used.<a name="line.366"></a>
<span class="sourceLineNo">367</span>     *<a name="line.367"></a>
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<span class="sourceLineNo">374</span><a name="line.374"></a>
<span class="sourceLineNo">375</span>    /**<a name="line.375"></a>
<span class="sourceLineNo">376</span>     * Get the schema version that this instance used for the most recently created transaction.<a name="line.376"></a>
<span class="sourceLineNo">377</span>     *<a name="line.377"></a>
<span class="sourceLineNo">378</span>     * &lt;p&gt;<a name="line.378"></a>
<span class="sourceLineNo">379</span>     * If no transactions have been created yet, this returns zero. Otherwise, it returns the schema version<a name="line.379"></a>
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<span class="sourceLineNo">381</span>     * &lt;/p&gt;<a name="line.381"></a>
<span class="sourceLineNo">382</span>     *<a name="line.382"></a>
<span class="sourceLineNo">383</span>     * &lt;p&gt;<a name="line.383"></a>
<span class="sourceLineNo">384</span>     * If the {@code version} passed to the constructor was zero, this method can be used to read the highest schema<a name="line.384"></a>
<span class="sourceLineNo">385</span>     * version seen in the database by the most recently created transaction.<a name="line.385"></a>
<span class="sourceLineNo">386</span>     * &lt;/p&gt;<a name="line.386"></a>
<span class="sourceLineNo">387</span>     *<a name="line.387"></a>
<span class="sourceLineNo">388</span>     * &lt;p&gt;<a name="line.388"></a>
<span class="sourceLineNo">389</span>     * If the {@code version} passed to the constructor was non-zero, and at least one transaction has been created,<a name="line.389"></a>
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<span class="sourceLineNo">391</span>     * &lt;/p&gt;<a name="line.391"></a>
<span class="sourceLineNo">392</span>     *<a name="line.392"></a>
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<span class="sourceLineNo">403</span>     *<a name="line.403"></a>
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<span class="sourceLineNo">415</span>        return null;<a name="line.415"></a>
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<span class="sourceLineNo">417</span><a name="line.417"></a>
<span class="sourceLineNo">418</span>// Transactions<a name="line.418"></a>
<span class="sourceLineNo">419</span><a name="line.419"></a>
<span class="sourceLineNo">420</span>    /**<a name="line.420"></a>
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<span class="sourceLineNo">423</span>     * &lt;p&gt;<a name="line.423"></a>
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<span class="sourceLineNo">426</span>     * {@link JTransaction#setCurrent JTransaction.setCurrent}{@code (null)} to be invoked as soon as the<a name="line.426"></a>
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<span class="sourceLineNo">429</span>     *<a name="line.429"></a>
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<span class="sourceLineNo">432</span>     * @return the newly created transaction<a name="line.432"></a>
<span class="sourceLineNo">433</span>     * @throws org.jsimpledb.core.InvalidSchemaException if {@code schemaModel} does not match what's recorded in the<a name="line.433"></a>
<span class="sourceLineNo">434</span>     *  database for the schema version provided to the constructor<a name="line.434"></a>
<span class="sourceLineNo">435</span>     * @throws org.jsimpledb.core.InvalidSchemaException if the schema version provided to the constructor<a name="line.435"></a>
<span class="sourceLineNo">436</span>     *  is not recorded in the database and {@code allowNewSchema} is false<a name="line.436"></a>
<span class="sourceLineNo">437</span>     * @throws org.jsimpledb.core.InvalidSchemaException if the schema version provided to the constructor<a name="line.437"></a>
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<span class="sourceLineNo">454</span>// Schema<a name="line.454"></a>
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<span class="sourceLineNo">457</span>     * Get the {@link SchemaModel} associated with this instance, derived from the annotations on the scanned classes.<a name="line.457"></a>
<span class="sourceLineNo">458</span>     *<a name="line.458"></a>
<span class="sourceLineNo">459</span>     * @return the associated schema model<a name="line.459"></a>
<span class="sourceLineNo">460</span>     */<a name="line.460"></a>
<span class="sourceLineNo">461</span>    public SchemaModel getSchemaModel() {<a name="line.461"></a>
<span class="sourceLineNo">462</span>        if (this.schemaModel == null) {<a name="line.462"></a>
<span class="sourceLineNo">463</span>            final SchemaModel model = new SchemaModel();<a name="line.463"></a>
<span class="sourceLineNo">464</span>            for (JClass&lt;?&gt; jclass : this.jclasses.values()) {<a name="line.464"></a>
<span class="sourceLineNo">465</span>                final SchemaObjectType schemaObjectType = jclass.toSchemaItem(this);<a name="line.465"></a>
<span class="sourceLineNo">466</span>                model.getSchemaObjectTypes().put(schemaObjectType.getStorageId(), schemaObjectType);<a name="line.466"></a>
<span class="sourceLineNo">467</span>            }<a name="line.467"></a>
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<span class="sourceLineNo">469</span>            this.log.debug("JSimpleDB schema generated from annotated classes:\n{}", this.schemaModel);<a name="line.469"></a>
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<span class="sourceLineNo">471</span>        return this.schemaModel.clone();<a name="line.471"></a>
<span class="sourceLineNo">472</span>    }<a name="line.472"></a>
<span class="sourceLineNo">473</span><a name="line.473"></a>
<span class="sourceLineNo">474</span>    /**<a name="line.474"></a>
<span class="sourceLineNo">475</span>     * Get a {@link NameIndex} based on {@linkplain #getSchemaModel this instance's schema model}.<a name="line.475"></a>
<span class="sourceLineNo">476</span>     *<a name="line.476"></a>
<span class="sourceLineNo">477</span>     * @return a name index on this instance's schema model<a name="line.477"></a>
<span class="sourceLineNo">478</span>     */<a name="line.478"></a>
<span class="sourceLineNo">479</span>    public NameIndex getNameIndex() {<a name="line.479"></a>
<span class="sourceLineNo">480</span>        if (this.nameIndex == null)<a name="line.480"></a>
<span class="sourceLineNo">481</span>            this.nameIndex = new NameIndex(this.getSchemaModel());<a name="line.481"></a>
<span class="sourceLineNo">482</span>        return this.nameIndex;<a name="line.482"></a>
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<span class="sourceLineNo">484</span><a name="line.484"></a>
<span class="sourceLineNo">485</span>// JClass access<a name="line.485"></a>
<span class="sourceLineNo">486</span><a name="line.486"></a>
<span class="sourceLineNo">487</span>    /**<a name="line.487"></a>
<span class="sourceLineNo">488</span>     * Get all {@link JClass}'s associated with this instance, indexed by storage ID.<a name="line.488"></a>
<span class="sourceLineNo">489</span>     *<a name="line.489"></a>
<span class="sourceLineNo">490</span>     * @return read-only mapping from storage ID to {@link JClass}<a name="line.490"></a>
<span class="sourceLineNo">491</span>     */<a name="line.491"></a>
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<span class="sourceLineNo">495</span><a name="line.495"></a>
<span class="sourceLineNo">496</span>    /**<a name="line.496"></a>
<span class="sourceLineNo">497</span>     * Get all {@link JClass}'s associated with this instance, indexed by Java model type.<a name="line.497"></a>
<span class="sourceLineNo">498</span>     *<a name="line.498"></a>
<span class="sourceLineNo">499</span>     * @return read-only mapping from Java model type to {@link JClass}<a name="line.499"></a>
<span class="sourceLineNo">500</span>     */<a name="line.500"></a>
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<span class="sourceLineNo">502</span>        return Collections.unmodifiableMap(this.jclassesByType);<a name="line.502"></a>
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<span class="sourceLineNo">504</span><a name="line.504"></a>
<span class="sourceLineNo">505</span>    /**<a name="line.505"></a>
<span class="sourceLineNo">506</span>     * Get the {@link JClass} modeled by the given type.<a name="line.506"></a>
<span class="sourceLineNo">507</span>     *<a name="line.507"></a>
<span class="sourceLineNo">508</span>     * @param type an annotated Java object model type<a name="line.508"></a>
<span class="sourceLineNo">509</span>     * @param &lt;T&gt; Java model type<a name="line.509"></a>
<span class="sourceLineNo">510</span>     * @return associated {@link JClass}<a name="line.510"></a>
<span class="sourceLineNo">511</span>     * @throws IllegalArgumentException if {@code type} is not equal to a known Java object model type<a name="line.511"></a>
<span class="sourceLineNo">512</span>     */<a name="line.512"></a>
<span class="sourceLineNo">513</span>    @SuppressWarnings("unchecked")<a name="line.513"></a>
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<span class="sourceLineNo">517</span>            throw new IllegalArgumentException("java model type is not recognized: " + type);<a name="line.517"></a>
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<span class="sourceLineNo">520</span><a name="line.520"></a>
<span class="sourceLineNo">521</span>    /**<a name="line.521"></a>
<span class="sourceLineNo">522</span>     * Get the {@link JClass} associated with the object ID.<a name="line.522"></a>
<span class="sourceLineNo">523</span>     *<a name="line.523"></a>
<span class="sourceLineNo">524</span>     * @param id object ID<a name="line.524"></a>
<span class="sourceLineNo">525</span>     * @return {@link JClass} instance<a name="line.525"></a>
<span class="sourceLineNo">526</span>     * @throws TypeNotInSchemaVersionException if {@code id} has a type that does not exist in this instance's schema version<a name="line.526"></a>
<span class="sourceLineNo">527</span>     * @throws IllegalArgumentException if {@code id} is null<a name="line.527"></a>
<span class="sourceLineNo">528</span>     */<a name="line.528"></a>
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<span class="sourceLineNo">533</span>        if (jclass == null)<a name="line.533"></a>
<span class="sourceLineNo">534</span>            throw new TypeNotInSchemaVersionException(id, this.actualVersion);<a name="line.534"></a>
<span class="sourceLineNo">535</span>        return jclass;<a name="line.535"></a>
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<span class="sourceLineNo">537</span><a name="line.537"></a>
<span class="sourceLineNo">538</span>    /**<a name="line.538"></a>
<span class="sourceLineNo">539</span>     * Get the {@link JClass} associated with the given storage ID.<a name="line.539"></a>
<span class="sourceLineNo">540</span>     *<a name="line.540"></a>
<span class="sourceLineNo">541</span>     * @param storageId object type storage ID<a name="line.541"></a>
<span class="sourceLineNo">542</span>     * @return {@link JClass} instance<a name="line.542"></a>
<span class="sourceLineNo">543</span>     * @throws UnknownTypeException if {@code storageId} does not represent an object type<a name="line.543"></a>
<span class="sourceLineNo">544</span>     */<a name="line.544"></a>
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<span class="sourceLineNo">547</span>        if (jclass == null)<a name="line.547"></a>
<span class="sourceLineNo">548</span>            throw new UnknownTypeException(storageId, this.actualVersion);<a name="line.548"></a>
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<span class="sourceLineNo">551</span><a name="line.551"></a>
<span class="sourceLineNo">552</span>    /**<a name="line.552"></a>
<span class="sourceLineNo">553</span>     * Get all {@link JClass}es which sub-type the given type.<a name="line.553"></a>
<span class="sourceLineNo">554</span>     *<a name="line.554"></a>
<span class="sourceLineNo">555</span>     * @param type type restriction, or null for no restrction<a name="line.555"></a>
<span class="sourceLineNo">556</span>     * @param &lt;T&gt; Java model type<a name="line.556"></a>
<span class="sourceLineNo">557</span>     * @return list of {@link JClass}es whose type is {@code type} or a sub-type, ordered by storage ID<a name="line.557"></a>
<span class="sourceLineNo">558</span>     */<a name="line.558"></a>
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<span class="sourceLineNo">562</span>        for (JClass&lt;?&gt; jclass : this.jclasses.values()) {<a name="line.562"></a>
<span class="sourceLineNo">563</span>            if (type == null || type.isAssignableFrom(jclass.type))<a name="line.563"></a>
<span class="sourceLineNo">564</span>                list.add((JClass&lt;? extends T&gt;)jclass);<a name="line.564"></a>
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<span class="sourceLineNo">568</span><a name="line.568"></a>
<span class="sourceLineNo">569</span>    /**<a name="line.569"></a>
<span class="sourceLineNo">570</span>     * Generate the {@link KeyRanges} restricting objects to the specified type.<a name="line.570"></a>
<span class="sourceLineNo">571</span>     *<a name="line.571"></a>
<span class="sourceLineNo">572</span>     * @param type any Java type, or null for no restriction<a name="line.572"></a>
<span class="sourceLineNo">573</span>     * @return key restriction for {@code type}<a name="line.573"></a>
<span class="sourceLineNo">574</span>     */<a name="line.574"></a>
<span class="sourceLineNo">575</span>    KeyRanges keyRangesFor(Class&lt;?&gt; type) {<a name="line.575"></a>
<span class="sourceLineNo">576</span>        if (type == null)<a name="line.576"></a>
<span class="sourceLineNo">577</span>            return KeyRanges.FULL;<a name="line.577"></a>
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<span class="sourceLineNo">579</span>        for (JClass&lt;?&gt; jclass : this.getJClasses(type))<a name="line.579"></a>
<span class="sourceLineNo">580</span>            list.add(ObjId.getKeyRange(jclass.storageId));<a name="line.580"></a>
<span class="sourceLineNo">581</span>        return new KeyRanges(list);<a name="line.581"></a>
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<span class="sourceLineNo">583</span><a name="line.583"></a>
<span class="sourceLineNo">584</span>// Object Cache<a name="line.584"></a>
<span class="sourceLineNo">585</span><a name="line.585"></a>
<span class="sourceLineNo">586</span>    /**<a name="line.586"></a>
<span class="sourceLineNo">587</span>     * Get the Java model object that is has the given ID. This returns the object associated with normal<a name="line.587"></a>
<span class="sourceLineNo">588</span>     * (i.e., non-snapshot) {@link JTransaction}s. To get the object associated with a snapshot transaction,<a name="line.588"></a>
<span class="sourceLineNo">589</span>     * invoke {@link JTransaction#getJObject(ObjId) JTransaction.getJObject()} on the snapshot transaction.<a name="line.589"></a>
<span class="sourceLineNo">590</span>     *<a name="line.590"></a>
<span class="sourceLineNo">591</span>     * &lt;p&gt;<a name="line.591"></a>
<span class="sourceLineNo">592</span>     * This method guarantees that for any particular {@code id}, the same Java instance will always be returned.<a name="line.592"></a>
<span class="sourceLineNo">593</span>     * Note: while for any {@link ObjId} there is only one globally unique {@link JObject} per {@link JSimpleDB}<a name="line.593"></a>
<span class="sourceLineNo">594</span>     * shared by all {@link JTransaction}s (the object returned by this method), each {@link SnapshotJTransaction}<a name="line.594"></a>
<span class="sourceLineNo">595</span>     * maintains its own distinct pool of unique "snapshot" {@link JObject}s.<a name="line.595"></a>
<span class="sourceLineNo">596</span>     * &lt;/p&gt;<a name="line.596"></a>
<span class="sourceLineNo">597</span>     *<a name="line.597"></a>
<span class="sourceLineNo">598</span>     * &lt;p&gt;<a name="line.598"></a>
<span class="sourceLineNo">599</span>     * A non-null object is always returned, but the corresponding object may not exist in a given transaction.<a name="line.599"></a>
<span class="sourceLineNo">600</span>     * In that case, attempts to access its fields will throw {@link org.jsimpledb.core.DeletedObjectException}.<a name="line.600"></a>
<span class="sourceLineNo">601</span>     * Also, it's possible that {@code id} corresponds to an object type which no longer exists in the schema<a name="line.601"></a>
<span class="sourceLineNo">602</span>     * version associated with this instance. In that case, an {@link UntypedJObject} is returned.<a name="line.602"></a>
<span class="sourceLineNo">603</span>     * &lt;/p&gt;<a name="line.603"></a>
<span class="sourceLineNo">604</span>     *<a name="line.604"></a>
<span class="sourceLineNo">605</span>     * @param id object ID<a name="line.605"></a>
<span class="sourceLineNo">606</span>     * @return Java model object<a name="line.606"></a>
<span class="sourceLineNo">607</span>     * @throws IllegalArgumentException if {@code id} is null<a name="line.607"></a>
<span class="sourceLineNo">608</span>     * @see JTransaction#getJObject JTransaction.getJObject()<a name="line.608"></a>
<span class="sourceLineNo">609</span>     */<a name="line.609"></a>
<span class="sourceLineNo">610</span>    public JObject getJObject(ObjId id) {<a name="line.610"></a>
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<span class="sourceLineNo">613</span><a name="line.613"></a>
<span class="sourceLineNo">614</span>    /**<a name="line.614"></a>
<span class="sourceLineNo">615</span>     * Get the Java object used to represent the given object ID, cast to the given type.<a name="line.615"></a>
<span class="sourceLineNo">616</span>     * This method just invoke {@link #getJObject(ObjId)} and then casts the result.<a name="line.616"></a>
<span class="sourceLineNo">617</span>     *<a name="line.617"></a>
<span class="sourceLineNo">618</span>     * @param id object ID<a name="line.618"></a>
<span class="sourceLineNo">619</span>     * @param type expected type<a name="line.619"></a>
<span class="sourceLineNo">620</span>     * @param &lt;T&gt; expected Java model type<a name="line.620"></a>
<span class="sourceLineNo">621</span>     * @return Java model object<a name="line.621"></a>
<span class="sourceLineNo">622</span>     * @see #getJObject(ObjId)<a name="line.622"></a>
<span class="sourceLineNo">623</span>     * @throws ClassCastException if the Java model object does not have type {@code type}<a name="line.623"></a>
<span class="sourceLineNo">624</span>     * @throws IllegalArgumentException if {@code type} is null<a name="line.624"></a>
<span class="sourceLineNo">625</span>     */<a name="line.625"></a>
<span class="sourceLineNo">626</span>    public &lt;T&gt; T getJObject(ObjId id, Class&lt;T&gt; type) {<a name="line.626"></a>
<span class="sourceLineNo">627</span>        if (type == null)<a name="line.627"></a>
<span class="sourceLineNo">628</span>            throw new IllegalArgumentException("null type");<a name="line.628"></a>
<span class="sourceLineNo">629</span>        return type.cast(this.getJObject(id));<a name="line.629"></a>
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<span class="sourceLineNo">631</span><a name="line.631"></a>
<span class="sourceLineNo">632</span>// Reference Paths<a name="line.632"></a>
<span class="sourceLineNo">633</span><a name="line.633"></a>
<span class="sourceLineNo">634</span>    /**<a name="line.634"></a>
<span class="sourceLineNo">635</span>     * Parse a {@link ReferencePath} in {@link String} form.<a name="line.635"></a>
<span class="sourceLineNo">636</span>     *<a name="line.636"></a>
<span class="sourceLineNo">637</span>     * @param startType starting Java type for the path<a name="line.637"></a>
<span class="sourceLineNo">638</span>     * @param path dot-separated path of zero or more reference fields, followed by a target field<a name="line.638"></a>
<span class="sourceLineNo">639</span>     * @return parsed reference path<a name="line.639"></a>
<span class="sourceLineNo">640</span>     * @throws IllegalArgumentException if {@code path} is invalid<a name="line.640"></a>
<span class="sourceLineNo">641</span>     * @throws IllegalArgumentException if {@code startType} or {@code path} is null<a name="line.641"></a>
<span class="sourceLineNo">642</span>     * @see ReferencePath<a name="line.642"></a>
<span class="sourceLineNo">643</span>     */<a name="line.643"></a>
<span class="sourceLineNo">644</span>    public ReferencePath parseReferencePath(Class&lt;?&gt; startType, String path) {<a name="line.644"></a>
<span class="sourceLineNo">645</span>        return this.parseReferencePath(startType, path, null);<a name="line.645"></a>
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<span class="sourceLineNo">647</span><a name="line.647"></a>
<span class="sourceLineNo">648</span>    ReferencePath parseReferencePath(Class&lt;?&gt; startType, String path, Boolean lastIsSubField) {<a name="line.648"></a>
<span class="sourceLineNo">649</span>        return this.referencePathCache.get(startType, path, lastIsSubField);<a name="line.649"></a>
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<span class="sourceLineNo">651</span><a name="line.651"></a>
<span class="sourceLineNo">652</span>// Misc utility<a name="line.652"></a>
<span class="sourceLineNo">653</span><a name="line.653"></a>
<span class="sourceLineNo">654</span>    /**<a name="line.654"></a>
<span class="sourceLineNo">655</span>     * Utility method to get all of the objects directly referenced by a given object via any field.<a name="line.655"></a>
<span class="sourceLineNo">656</span>     *<a name="line.656"></a>
<span class="sourceLineNo">657</span>     * &lt;p&gt;<a name="line.657"></a>
<span class="sourceLineNo">658</span>     * Note: the returned {@link Iterable} may contain duplicates; these can be eliminated using an<a name="line.658"></a>
<span class="sourceLineNo">659</span>     * {@link org.jsimpledb.util.ObjIdSet} if necessary.<a name="line.659"></a>
<span class="sourceLineNo">660</span>     * &lt;/p&gt;<a name="line.660"></a>
<span class="sourceLineNo">661</span>     *<a name="line.661"></a>
<span class="sourceLineNo">662</span>     * @param jobj starting object<a name="line.662"></a>
<span class="sourceLineNo">663</span>     * @return all objects directly referenced by {@code jobj}<a name="line.663"></a>
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<span class="sourceLineNo">665</span>     */<a name="line.665"></a>
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<span class="sourceLineNo">667</span><a name="line.667"></a>
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<span class="sourceLineNo">670</span>            throw new IllegalArgumentException("null jobj");<a name="line.670"></a>
<span class="sourceLineNo">671</span>        final ObjId id = jobj.getObjId();<a name="line.671"></a>
<span class="sourceLineNo">672</span><a name="line.672"></a>
<span class="sourceLineNo">673</span>        // Visit fields<a name="line.673"></a>
<span class="sourceLineNo">674</span>        final ArrayList&lt;Iterable&lt;JObject&gt;&gt; iterables = new ArrayList&lt;&gt;();<a name="line.674"></a>
<span class="sourceLineNo">675</span>        for (JField jfield : this.getJClass(id).getJFieldsByStorageId().values()) {<a name="line.675"></a>
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<span class="sourceLineNo">677</span><a name="line.677"></a>
<span class="sourceLineNo">678</span>                @Override<a name="line.678"></a>
<span class="sourceLineNo">679</span>                public Void caseJReferenceField(JReferenceField field) {<a name="line.679"></a>
<span class="sourceLineNo">680</span>                    final JObject ref = field.getValue(jobj);<a name="line.680"></a>
<span class="sourceLineNo">681</span>                    if (ref != null)<a name="line.681"></a>
<span class="sourceLineNo">682</span>                        iterables.add(Collections.singleton(ref));<a name="line.682"></a>
<span class="sourceLineNo">683</span>                    return null;<a name="line.683"></a>
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<span class="sourceLineNo">685</span><a name="line.685"></a>
<span class="sourceLineNo">686</span>                @Override<a name="line.686"></a>
<span class="sourceLineNo">687</span>                public Void caseJMapField(JMapField field) {<a name="line.687"></a>
<span class="sourceLineNo">688</span>                    if (field.getKeyField() instanceof JReferenceField)<a name="line.688"></a>
<span class="sourceLineNo">689</span>                        iterables.add(Iterables.filter(field.getValue(jobj).keySet(), JObject.class));<a name="line.689"></a>
<span class="sourceLineNo">690</span>                    if (field.getValueField() instanceof JReferenceField)<a name="line.690"></a>
<span class="sourceLineNo">691</span>                        iterables.add(Iterables.filter(field.getValue(jobj).values(), JObject.class));<a name="line.691"></a>
<span class="sourceLineNo">692</span>                    return null;<a name="line.692"></a>
<span class="sourceLineNo">693</span>                }<a name="line.693"></a>
<span class="sourceLineNo">694</span><a name="line.694"></a>
<span class="sourceLineNo">695</span>                @Override<a name="line.695"></a>
<span class="sourceLineNo">696</span>                protected Void caseJCollectionField(JCollectionField field) {<a name="line.696"></a>
<span class="sourceLineNo">697</span>                    if (field.getElementField() instanceof JReferenceField)<a name="line.697"></a>
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<span class="sourceLineNo">699</span>                    return null;<a name="line.699"></a>
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<span class="sourceLineNo">701</span><a name="line.701"></a>
<span class="sourceLineNo">702</span>                @Override<a name="line.702"></a>
<span class="sourceLineNo">703</span>                protected Void caseJField(JField field) {<a name="line.703"></a>
<span class="sourceLineNo">704</span>                    return null;<a name="line.704"></a>
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<span class="sourceLineNo">706</span>            });<a name="line.706"></a>
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<span class="sourceLineNo">708</span><a name="line.708"></a>
<span class="sourceLineNo">709</span>        // Done<a name="line.709"></a>
<span class="sourceLineNo">710</span>        return Iterables.concat(iterables);<a name="line.710"></a>
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<span class="sourceLineNo">712</span><a name="line.712"></a>
<span class="sourceLineNo">713</span>// Internal Stuff<a name="line.713"></a>
<span class="sourceLineNo">714</span><a name="line.714"></a>
<span class="sourceLineNo">715</span>    // Get class generator for "untyped" JObject's<a name="line.715"></a>
<span class="sourceLineNo">716</span>    ClassGenerator&lt;UntypedJObject&gt; getUntypedClassGenerator() {<a name="line.716"></a>
<span class="sourceLineNo">717</span>        return this.untypedClassGenerator;<a name="line.717"></a>
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<span class="sourceLineNo">719</span><a name="line.719"></a>
<span class="sourceLineNo">720</span>    /**<a name="line.720"></a>
<span class="sourceLineNo">721</span>     * Get the {@link JFieldInfo} associated with the given storage ID.<a name="line.721"></a>
<span class="sourceLineNo">722</span>     *<a name="line.722"></a>
<span class="sourceLineNo">723</span>     * @param storageId field storage ID<a name="line.723"></a>
<span class="sourceLineNo">724</span>     * @param type required type<a name="line.724"></a>
<span class="sourceLineNo">725</span>     * @return {@link JField} instance<a name="line.725"></a>
<span class="sourceLineNo">726</span>     * @throws UnknownFieldException if {@code storageId} does not represent a field<a name="line.726"></a>
<span class="sourceLineNo">727</span>     */<a name="line.727"></a>
<span class="sourceLineNo">728</span>    &lt;T extends JFieldInfo&gt; T getJFieldInfo(int storageId, Class&lt;T&gt; type) {<a name="line.728"></a>
<span class="sourceLineNo">729</span>        if (type == null)<a name="line.729"></a>
<span class="sourceLineNo">730</span>            throw new IllegalArgumentException("null type");<a name="line.730"></a>
<span class="sourceLineNo">731</span>        final JFieldInfo jfieldInfo = this.jfieldInfos.get(storageId);<a name="line.731"></a>
<span class="sourceLineNo">732</span>        if (jfieldInfo == null) {<a name="line.732"></a>
<span class="sourceLineNo">733</span>            throw new UnknownFieldException(storageId, "no JSimpleDB field exists with storage ID "<a name="line.733"></a>
<span class="sourceLineNo">734</span>              + storageId + " in schema version " + this.actualVersion);<a name="line.734"></a>
<span class="sourceLineNo">735</span>        }<a name="line.735"></a>
<span class="sourceLineNo">736</span>        try {<a name="line.736"></a>
<span class="sourceLineNo">737</span>            return type.cast(jfieldInfo);<a name="line.737"></a>
<span class="sourceLineNo">738</span>        } catch (ClassCastException e) {<a name="line.738"></a>
<span class="sourceLineNo">739</span>            throw new UnknownFieldException(storageId, "no JSimpleDB fields exist with storage ID "<a name="line.739"></a>
<span class="sourceLineNo">740</span>              + storageId + " in schema version " + this.actualVersion + " (found field " + jfieldInfo + " instead)");<a name="line.740"></a>
<span class="sourceLineNo">741</span>        }<a name="line.741"></a>
<span class="sourceLineNo">742</span>    }<a name="line.742"></a>
<span class="sourceLineNo">743</span><a name="line.743"></a>
<span class="sourceLineNo">744</span>    // Add new JClass, checking for storage ID conflicts<a name="line.744"></a>
<span class="sourceLineNo">745</span>    private void addJClass(JClass&lt;?&gt; jclass) {<a name="line.745"></a>
<span class="sourceLineNo">746</span><a name="line.746"></a>
<span class="sourceLineNo">747</span>        // Check for storage ID conflict<a name="line.747"></a>
<span class="sourceLineNo">748</span>        final JClass&lt;?&gt; other = this.jclasses.get(jclass.storageId);<a name="line.748"></a>
<span class="sourceLineNo">749</span>        if (other != null) {<a name="line.749"></a>
<span class="sourceLineNo">750</span>            throw new IllegalArgumentException("illegal duplicate use of storage ID "<a name="line.750"></a>
<span class="sourceLineNo">751</span>              + jclass.storageId + " for both " + other + " and " + jclass);<a name="line.751"></a>
<span class="sourceLineNo">752</span>        }<a name="line.752"></a>
<span class="sourceLineNo">753</span>        this.jclasses.put(jclass.storageId, jclass);<a name="line.753"></a>
<span class="sourceLineNo">754</span>        assert !this.jclassesByType.containsKey(jclass.type);                   // this should never conflict, no need to check<a name="line.754"></a>
<span class="sourceLineNo">755</span>        this.jclassesByType.put(jclass.type, jclass);<a name="line.755"></a>
<span class="sourceLineNo">756</span>    }<a name="line.756"></a>
<span class="sourceLineNo">757</span><a name="line.757"></a>
<span class="sourceLineNo">758</span>    // Add new JFieldInfo, checking for conflicts<a name="line.758"></a>
<span class="sourceLineNo">759</span>    private &lt;T extends JFieldInfo&gt; void addJFieldInfo(JField jfield, T fieldInfo, Map&lt;Integer, String&gt; descriptionMap) {<a name="line.759"></a>
<span class="sourceLineNo">760</span>        this.addInfo(jfield, fieldInfo, this.jfieldInfos, descriptionMap);<a name="line.760"></a>
<span class="sourceLineNo">761</span>    }<a name="line.761"></a>
<span class="sourceLineNo">762</span><a name="line.762"></a>
<span class="sourceLineNo">763</span>    // Add new JCompositeIndexInfo, checking for conflicts<a name="line.763"></a>
<span class="sourceLineNo">764</span>    private void addJCompositeIndexInfo(JCompositeIndex index, JCompositeIndexInfo indexInfo, Map&lt;Integer, String&gt; descriptionMap) {<a name="line.764"></a>
<span class="sourceLineNo">765</span>        this.addInfo(index, indexInfo, this.jcompositeIndexInfos, descriptionMap);<a name="line.765"></a>
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<span class="sourceLineNo">767</span><a name="line.767"></a>
<span class="sourceLineNo">768</span>    // Add new info, checking for storage ID conflicts<a name="line.768"></a>
<span class="sourceLineNo">769</span>    private &lt;T&gt; void addInfo(JSchemaObject item, T info, Map&lt;Integer, T&gt; infoMap, Map&lt;Integer, String&gt; descriptionMap) {<a name="line.769"></a>
<span class="sourceLineNo">770</span>        final T existing = infoMap.get(item.storageId);<a name="line.770"></a>
<span class="sourceLineNo">771</span>        if (existing == null) {<a name="line.771"></a>
<span class="sourceLineNo">772</span>            infoMap.put(item.storageId, info);<a name="line.772"></a>
<span class="sourceLineNo">773</span>            descriptionMap.put(item.storageId, item.description);<a name="line.773"></a>
<span class="sourceLineNo">774</span>        } else if (!info.equals(existing)) {<a name="line.774"></a>
<span class="sourceLineNo">775</span>            throw new IllegalArgumentException("incompatible duplicate use of storage ID " + item.storageId<a name="line.775"></a>
<span class="sourceLineNo">776</span>              + " for " + descriptionMap.get(item.storageId) + " and " + item.description);<a name="line.776"></a>
<span class="sourceLineNo">777</span>        }<a name="line.777"></a>
<span class="sourceLineNo">778</span>    }<a name="line.778"></a>
<span class="sourceLineNo">779</span><a name="line.779"></a>
<span class="sourceLineNo">780</span>// Loader<a name="line.780"></a>
<span class="sourceLineNo">781</span><a name="line.781"></a>
<span class="sourceLineNo">782</span>    private class Loader extends ClassLoader {<a name="line.782"></a>
<span class="sourceLineNo">783</span><a name="line.783"></a>
<span class="sourceLineNo">784</span>        // Set up class loader<a name="line.784"></a>
<span class="sourceLineNo">785</span>        public Loader() {<a name="line.785"></a>
<span class="sourceLineNo">786</span>            super(Thread.currentThread().getContextClassLoader());<a name="line.786"></a>
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<span class="sourceLineNo">788</span><a name="line.788"></a>
<span class="sourceLineNo">789</span>        // Find matching ClassGenerator, if any, otherwise defer to parent<a name="line.789"></a>
<span class="sourceLineNo">790</span>        @Override<a name="line.790"></a>
<span class="sourceLineNo">791</span>        protected Class&lt;?&gt; findClass(String name) throws ClassNotFoundException {<a name="line.791"></a>
<span class="sourceLineNo">792</span>            byte[] bytes = null;<a name="line.792"></a>
<span class="sourceLineNo">793</span>            for (ClassGenerator&lt;?&gt; generator : JSimpleDB.this.classGenerators) {<a name="line.793"></a>
<span class="sourceLineNo">794</span>                if (name.equals(generator.getClassName().replace('/', '.'))) {<a name="line.794"></a>
<span class="sourceLineNo">795</span>                    bytes = generator.generateBytecode();<a name="line.795"></a>
<span class="sourceLineNo">796</span>                    break;<a name="line.796"></a>
<span class="sourceLineNo">797</span>                }<a name="line.797"></a>
<span class="sourceLineNo">798</span>                if (name.equals(generator.getSnapshotClassName().replace('/', '.'))) {<a name="line.798"></a>
<span class="sourceLineNo">799</span>                    bytes = generator.generateSnapshotBytecode();<a name="line.799"></a>
<span class="sourceLineNo">800</span>                    break;<a name="line.800"></a>
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<span class="sourceLineNo">803</span>            return bytes != null ? this.defineClass(name, bytes, 0, bytes.length) : super.findClass(name);<a name="line.803"></a>
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<span class="sourceLineNo">805</span>    }<a name="line.805"></a>
<span class="sourceLineNo">806</span><a name="line.806"></a>
<span class="sourceLineNo">807</span>// CleanupCurrentCallback<a name="line.807"></a>
<span class="sourceLineNo">808</span><a name="line.808"></a>
<span class="sourceLineNo">809</span>    private static final class CleanupCurrentCallback extends Transaction.CallbackAdapter {<a name="line.809"></a>
<span class="sourceLineNo">810</span><a name="line.810"></a>
<span class="sourceLineNo">811</span>        @Override<a name="line.811"></a>
<span class="sourceLineNo">812</span>        public void afterCommit() {<a name="line.812"></a>
<span class="sourceLineNo">813</span>            JTransaction.setCurrent(null);<a name="line.813"></a>
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<span class="sourceLineNo">815</span><a name="line.815"></a>
<span class="sourceLineNo">816</span>        @Override<a name="line.816"></a>
<span class="sourceLineNo">817</span>        public void afterCompletion(boolean committed) {<a name="line.817"></a>
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<span class="sourceLineNo">820</span><a name="line.820"></a>
<span class="sourceLineNo">821</span>        @Override<a name="line.821"></a>
<span class="sourceLineNo">822</span>        public int hashCode() {<a name="line.822"></a>
<span class="sourceLineNo">823</span>            return this.getClass().hashCode();<a name="line.823"></a>
<span class="sourceLineNo">824</span>        }<a name="line.824"></a>
<span class="sourceLineNo">825</span><a name="line.825"></a>
<span class="sourceLineNo">826</span>        @Override<a name="line.826"></a>
<span class="sourceLineNo">827</span>        public boolean equals(Object obj) {<a name="line.827"></a>
<span class="sourceLineNo">828</span>            return obj != null &amp;&amp; obj.getClass() == this.getClass();<a name="line.828"></a>
<span class="sourceLineNo">829</span>        }<a name="line.829"></a>
<span class="sourceLineNo">830</span>    }<a name="line.830"></a>
<span class="sourceLineNo">831</span>}<a name="line.831"></a>
<span class="sourceLineNo">832</span><a name="line.832"></a>




























































</pre>
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